Machine for cutting and creasing box blanks



Sept. 23', 1930. v F. P. GLOSE 1,776,534

MACHINE FOR CUTTING AND CREASING BOX BLANKS Filed April 12. 1926 Patented Sept. 23, 1930 "U N T'Eo-si-Arns T :Q CEil-Z FREDERICK P. GLOSE, F G'LENARM, MARYLAND, ASSIGNOR T0 F. X. HOOPER COM PA FNY, a OF GLENARM, MARYLAND, A. CORPORATIOIQ' OF MARYLAND 1.. i i

mnonrnn ron CUTTING AND oianasmenox BLaNKsf Application filed April 12,

and more particularly to means whereby the cutting and creasing heads may be readily clutched to their supportingshafts at any desired positions on the shafts.

In machines of this character, it is necessary to set the cutting and creasing heads in different positions on the shafts,for operating upon box blanks of different dimensions. Usually, the cutting and creasing heads, which are on two or more shafts in the machine, are secured to the shafts by set screws, and these are dificult to reach without turning the machine by hand to bring the screws into accessible positions; also, the cutting and creasing heads have to be set to precisepositions on the shafts, and in turning the set screws to tighten them,the heads are apt to be moved slightly from their intended positions. 7

The purpose of my invention is to provide means, whereby the heads may be conveniently and accurately set and. secured in any desired position on the shafts, without the use of set screws. In carrying out my invention, I provide a spline or key in each shaft long enough to be engaged by the several heads on the shafts, in the various working positions j of the heads, and I providein each head a recess through which the key extends, this recess having a surface inclined to the radial line passing through the key, whereby when the head is turned in one direction relatively '3 to the shaft, the inclined surface will oni the key and clutch the head to the shaft,

and when the head is turned in the opposite direction, relatively to the shaft, the head will become unclutched, and may then be moved along the shaft to any desired position. In order that the heads may be readily turned on the shafts, each head 'is provided with a series of radial holes so that in whatever position the shaft stops, one of the holes the shaft 8.

19 2's. serial in 101,445. f

a bar or rodby which thehead maybe-turned,

In the accompanyingdrawing,

Fig. 1 is a top plan view of part of a cut-' ting and creasing machineembodying my improvements; and, i j

' Fig. 2 is a section through an upper and lower shafton theline 2- 2of Fig-. l.

In Fig. 1 of the'drawing', a represents in plan view a part of amachineiforicutting and creasing I cardboard box blanks. As shown, the machine comprises an upper shaft 1, on whichvare adjustable heads 2',- which carry circular creasing members 3, and these co-operate with creasing members 4 on a shaft-5 (Fig. 2) tocrease the cardboard stock.

trimming knives 7, for trimming the edges of the blanks, and it v rill be understood that theseknives co-operatewithother circular knives on the shaft 5. A shaft 8, geared to" the shaft 1, carries adjustabe heads 10 on which are/mounted "the circular lslitting knives 11, and these knives oo-operate with similar knives on a shaft (not shownlbelow In the several shafts arearrang ed -long keys or splines b and the heads'vare. provided with recesses 12 through which the keys I extend. These recesses are butv out- 'wardly from the inner peripheries of-the heads, andthe outer wall 13,0f each recess is inclined with respect to iaradial linepassing through the key on the shaftonwhich the head is mounted, Flat wearing shoes. ll. of hardened steel, are suitably secured against the walls 13 and aretherefore also inclined with respect to radial lines passing through the keys. 1

. .Each circular head is alsoprovidedwith a plurality of radial sockets 15, spaced at short intervals about its circumference and adapted to receive a rod or bar by which theoperator may turn the head relatively to shaft which the head is mounted. With the construction described, when'it desired to adjust a cutter or creaser head on a shaft, the machine being stopped, the operator places a turning pin or bar in the socket 15 which is most convenient of access and turns the head in the direction in which the shaft turns when in operation, thereby releasing the wearing shoe 14 from the key in the shaft. The head may then he slid along the shaft to the desired point, and by then turning the head in the opposite direction, the shoe 14: will lock against the key and the head will be clutched to the shaft. When the machine is in operation, if the shaft 1 turns counterclockwise, as indicated by the arrow in Fig. 2, the key will be continuously forced against the inclined shoe,'thus causing the head to be firmly clutched to the shaft. The lower shaft 5 turns oppositely to the direction of rotation of the shaft 1, and therefore the outer walls and the wearing shoes in the recesses of the heads on this shaft are inclined oppositely to the walls and shoes in the heads on the upper shaft. I 7

It will be understood that the heads on the shaft 8 are provided with recesses and wearing shoes corresponding to those on the shaft 1, and that the heads on the shaft below the shaft 8 (not shown) will have recesses corresponding to those in the heads on the shaft 5.

The length of the key on each shaft is such as to cover the entire length of adjustment of the heads on that shaft. Thus, each key is common to a plurality of heads and the heads may be accurately adjusted to any desired positions on the shaft without the use of set screws. By providing a plurality of radial holes in the heads one hole in each head will be accessible to the operator in whatever position the shafts may be when the 'machine stops. By the structure described, much time can be saved in the adjustment in the heads for operating upon different sizes of box blanks.

What I claim is:

1. In a machine for cutting and creasing box blanks, a shaft, a relatively long key on the shaft, and a plurality of circular heads axially movable on the shaft to various workingpositions,said key extending throughout the range of working positions of the several heads, each head having a notch through V which the key extends, each notch having a surface, inclined with respect to a radial line passing through the key, adapted to engage and bind upon the key, and each head having means whereby a bar, for moving the head, may be interlocked with the head at a plurality of circumferentially spaced points.

2. In a machine for cutting and creasing box blanks, a shaft, a relatively long key on the shaft, and a plurality of circular heads axially movable on the shaft to various working positions, said key extending throughout the range of working positions of the several heads, each head having a notch through signature.

FREDERICK P. GLOSE. 

